CVE-2026-73077: Vim: Arbitrary Code Execution via Shell Keyword Lookup

unknownCVE-2026-73077

CSIRTS triage

vendor: Vim product: Vim Code injection

What: Arbitrary code can be executed in Vim through shell keyword lookup functionality.
Who is affected: Vim users in environments where shell keyword resolution is enabled and attackers can influence input files.
Urgency: Unknown severity; immediate assessment needed to determine code execution feasibility.
Action: Apply Vim security updates and disable shell keyword lookup if not required.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: unknown
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-73077

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-730770.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-73077	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

unknownCVE-2026-73077: Vim is an open source, command line text editor. Prior to 9.2.0839, the runtime/ftplugin/sh.vi…nvd

Recent advisories for Vim

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownUSN-8679-1: Vim vulnerabilityubuntu · 2026-08-25
medium[NEW] [medium] vim: Multiple vulnerabilitiescert-bund · 2026-08-25
medium[NEW] [medium] vim: Multiple vulnerabilitiescert-bund · 2026-08-25
medium[UPDATE] [medium] vim: Multiple vulnerabilities allow code executioncert-bund · 2026-08-20
highCVE-2026-43961: A flaw was found in Vim's netrw plugin. A crafted filename containing quote characters and exp…nvd · 2026-08-19
medium[UPDATE] [medium] vim: Multiple vulnerabilities allow code executioncert-bund · 2026-08-19